Ivan Toney is Brentford's top goalscorer this season with eight goals
Chelsea extended their unbeaten run to seven games under Graham Potter after a goalless draw against a battling Brentford side.
In a hard-fought west London derby, the hosts had three good chances, but Blues goalkeeper Kepa Arrizabalaga twice kept out headers from Ivan Toney and another one from Bryan Mbeumo.
Chelsea saw Cesar Azpilicueta and Kai Havertz both denied by Brentford's David Raya.
Substitutes Pierre-Emerick Aubameyang and Christian Pulisic nearly won it late on for the visitors, but Raya again did well to make vital saves to keep it level.
The point keeps Potter's side fourth, seven points behind leaders Arsenal, while ninth-placed Brentford have now drawn five of 11 Premier League matches this season.
Bees boss Thomas Frank will be delighted with the performance from his side, who were the better team for large parts of a tight match at the Gtech Community Stadium.
But Frank had to suffer some nervous moments in the four minutes of stoppage time as Carney Chukwuemeka forced a fine save from Raya, before Chelsea appealed for a penalty for a handball, but referee Jarred Gillett felt Ethan Pinnock had not committed an offence.
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Keepers impress as Arrizabalaga claims another clean sheet
Arrizabalaga, who started the season second choice behind Edouard Mendy, has now kept five successive clean sheets in all competitions.
He had produced a starring role in the 2-0 win at Aston Villa at the weekend and was called into action after only nine minutes when he had to push over Toney's header from Vitaly Janelt's right-wing cross.
The Spanish keeper then produced another fine save from another close-range Toney header 25 minutes later after Chelsea's Ruben Loftus-Cheek had inadvertently headed into the striker's path.
Chelsea were playing their sixth of nine games in a packed October and, with vital matches at home to Manchester United on Saturday and at Red Bull Salzburg in the Champions League on Tuesday, Potter opted to rotate his squad.
He made five changes from the side that begun the game at Aston Villa, with Chelsea's top two scorers this season, Raheem Sterling and Aubameyang, dropping to the bench while 21-year-old Albania striker Armando Broja made his first start.
However, the visitors had to wait 36 minutes before their first shot on target, with Raya getting down quickly and showing a strong hand to push away Azpilicueta's angled drive from outside the penalty area.
Mbeumo should have done better earlier in the second half with a header when free in the penalty area as the Bees pushed for their first home league win over Chelsea since 1938.
Potter, who lost midfielder Conor Gallagher after 15 minutes through injury, had to make changes and substitutes Pulisic, Aubameyang, and Chukwuemeka all had chances. Some excellent defending from Pinnock denied Sterling on a night where both sides had to settle for a point.
Player of the match
HavertzKai Havertz
with an average of 8.17
- BrentfordBrentfordBrentfordChelseaChelseaChelsea
BrentfordAvgSquad number17Player nameToneyAverage rating
7.09
Squad number27Player nameJaneltAverage rating
6.65
Squad number5Player namePinnockAverage rating
6.63
Squad number8Player nameJensenAverage rating
6.60
Squad number14Player nameGhoddosAverage rating
6.55
Squad number16Player nameMeeAverage rating
6.46
Squad number1Player nameRayaAverage rating
6.45
Squad number3Player nameHenryAverage rating
6.38
Squad number11Player nameWissaAverage rating
6.33
Squad number19Player nameMbeumoAverage rating
6.31
Squad number15Player nameOnyekaAverage rating
6.30
Squad number10Player nameDasilvaAverage rating
6.29
Squad number13Player nameM JorgensenAverage rating
6.25
Squad number30Player nameRoerslevAverage rating
6.25
Squad number26Player nameBaptisteAverage rating
6.09
ChelseaAvgSquad number29Player nameHavertzAverage rating
8.17
Squad number1Player nameArrizabalagaAverage rating
7.26
Squad number10Player namePulisicAverage rating
6.59
Squad number14Player nameChalobahAverage rating
6.43
Squad number28Player nameAzpilicuetaAverage rating
6.43
Squad number30Player nameChukwuemekaAverage rating
6.30
Squad number26Player nameKoulibalyAverage rating
6.27
Squad number12Player nameLoftus-CheekAverage rating
6.13
Squad number17Player nameSterlingAverage rating
6.04
Squad number19Player nameMountAverage rating
6.03
Squad number18Player nameBrojaAverage rating
6.01
Squad number32Player nameCucurellaAverage rating
5.83
Squad number5Player nameJorginhoAverage rating
5.83
Squad number9Player nameAubameyangAverage rating
5.72
Squad number8Player nameKovacicAverage rating
5.68
Squad number23Player nameGallagherAverage rating
5.62
- Line-upsMatch StatsLive Text
Line-upsBrentford
Formation 3-5-2
1Raya13M Jorgensen16Mee5Pinnock30Roerslev15Onyeka27Janelt8Jensen3Henry19Mbeumo17Toney
- 1Raya13M Jorgensen16Mee5Pinnock30Roerslev15OnyekaSubstituted forBaptisteat 60'minutes27JaneltSubstituted forGhoddosat 90+2'minutes8JensenSubstituted forDasilvaat 73'minutes3Henry19MbeumoSubstituted forWissaat 72'minutes17Toney
Substitutes
- 7Canós10Dasilva11Wissa14Ghoddos20Ajer23Lewis-Potter24Damsgaard26Baptiste34Cox
Chelsea
Formation 3-4-2-1
1Arrizabalaga28Azpilicueta14Chalobah26Koulibaly12Loftus-Cheek23Gallagher5Jorginho32Cucurella29Havertz19Mount18Broja
- 1Arrizabalaga28Azpilicueta14Chalobah26Koulibaly12Loftus-Cheek23GallagherSubstituted forKovacicat 15'minutes5Jorginho32CucurellaSubstituted forPulisicat 61'minutes29HavertzSubstituted forAubameyangat 81'minutes19MountSubstituted forChukwuemekaat 62'minutes18BrojaSubstituted forSterlingat 62'minutes
Substitutes
- 6Thiago Silva8Kovacic9Aubameyang10Pulisic16Mendy17Sterling20Zakaria22Ziyech30Chukwuemeka
Referee:Jarred GillettMatch StatsHome TeamBrentfordAway TeamChelseaPossessionHome33%Away67%ShotsHome8Away14Shots on TargetHome5Away5CornersHome6Away2FoulsHome7Away7Live TextPost update
Match ends, Brentford 0, Chelsea 0.
90'+5'Full Time
Second Half ends, Brentford 0, Chelsea 0.
90'+4'Post update
Corner, Chelsea. Conceded by David Raya.
90'+4'Post update
Attempt saved. Carney Chukwuemeka (Chelsea) left footed shot from a difficult angle on the left is saved in the bottom left corner.
90'+3'Post update
Ruben Loftus-Cheek (Chelsea) wins a free kick in the defensive half.
90'+3'Post update
Foul by Rico Henry (Brentford).
90'+2'Substitution
Substitution, Brentford. Saman Ghoddos replaces Vitaly Janelt.
90'Post update
Carney Chukwuemeka (Chelsea) wins a free kick in the attacking half.
90'Post update
Foul by Yoane Wissa (Brentford).
89'Post update
Attempt saved. Christian Pulisic (Chelsea) right footed shot from outside the box is saved in the top centre of the goal. Assisted by Mateo Kovacic.
88'Post update
Attempt blocked. Mateo Kovacic (Chelsea) right footed shot from outside the box is blocked. Assisted by Christian Pulisic.
86'Post update
Attempt saved. Pierre-Emerick Aubameyang (Chelsea) right footed shot from outside the box is saved in the bottom left corner. Assisted by Raheem Sterling.
84'Post update
Attempt blocked. Raheem Sterling (Chelsea) left footed shot from the centre of the box is blocked. Assisted by Pierre-Emerick Aubameyang.
82'Post update
Attempt saved. Ivan Toney (Brentford) right footed shot from the right side of the six yard box is saved in the bottom right corner. Assisted by Shandon Baptiste.
82'Post update
Attempt missed. Mateo Kovacic (Chelsea) right footed shot from outside the box is high and wide to the right. Assisted by Carney Chukwuemeka.
81'Substitution
Substitution, Chelsea. Pierre-Emerick Aubameyang replaces Kai Havertz.
79'Post update
Offside, Brentford. David Raya tries a through ball, but Yoane Wissa is caught offside.
76'Post update
Corner, Chelsea. Conceded by Vitaly Janelt.
76'Post update
Attempt blocked. Mateo Kovacic (Chelsea) right footed shot from outside the box is blocked. Assisted by Raheem Sterling.
75'Post update
Attempt missed. Rico Henry (Brentford) left footed shot from a difficult angle on the left is close, but misses to the left. Assisted by Yoane Wissa.
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Source: bbc.com